Table 3. Catalytic evaluation at different temperatures using Ni1/Et₂AlCl for ethylene polymerization^a.

Entry	T/°C	Activityb	M w c	M w/Mnc	T m d
1	20	4.67	10.90	6.81	55.40
2	30	4.27	9.02	3.38	41.18
3	40	4.07	6.57	2.29	39.62
4	50	3.82	5.29	2.19	15.94
5	70	3.20	5.15	1.72	—e
6	80	2.92	4.64	2.23	—e
7	90	2.56	2.67	1.21	—e

^aConditions: 2 μmol Ni1 and 100 mL toluene, 10 atm C₂H₄, 30 min, Al/Ni = 600.

^b10⁶ g(PE) mol⁻¹ (Ni) h⁻¹.

^c M _w: 10⁵ g mol⁻¹, M_w and M_w/M_n determined by GPC.

^dDetermined by DSC.

^eBroad and weak endotherms, amorphous-like polyethylenes.